A COMPARATIVE STUDY IN ANTIFUNGAL ACTIVITY BETWEEN ZINC OXIDE AND TITANIUM DIOXIDE NANOPARTICLES AGAINST ASPERGILLUS NIGER IN TANNED LEATHER | ||
| Shedet | ||
| Volume 12, Issue 12, January 2024, Pages 365-377 PDF (1.98 M) | ||
| Document Type: research articles | ||
| DOI: 10.21608/shedet.2023.298679 | ||
| Author | ||
| Elsayda-Nafesa El-Shamy | ||
| Hadaak AL-Ahraam, gate no.4, villa | ||
| Abstract | ||
| Tanned leather artifacts are susceptible to microbiological growth, causing deterioration when suitable temperature and humidity conditions are found due to leather containing a nutrient medium of protein and lipids. This study aims to compare the antifungal activity between Zinc Oxide (ZnONPs) and Titanium Dioxide (TiO 2 NPs) nanoparticles against Aspergillus niger on the infected leather samples through microbiological ageing. Also the author applied two different techniques of applying nanomaterials via soaking and spraying. Color changes; Mechanical properties (tensile strength – elongation) and pH value have been measured to estimate the stability of leather against Aspergillus niger. The results revealed that ZnONPs can prevent the hyphal growth of Aspergillus in comparison to untreated samples because of the high antifungal activity in ZnONPs. Compared with the control sample in which the inhibition growth percentage was 0%, the inhibition of growth ZnONPs against Aspergillus in tanned leather, was treated by the soaking technique was 78%. Also, the inhibition of the growth of TiO 2 NPs against Aspergillus in the tanned leather sample treated by the same soaking method was 22.2%. However, in the case of spraying, the results were not satisfying as the inhibition of growth in the case of ZnONPs was 32.4% but the inhibition of growth in the case of TiO 2 NPs was 18.6%. The results proved a decrease in the color change for both Zinc and Titanium nanoparticles compared with the control samples. The author found ZnONPs are better than TiO2 NPs in results of lightness (L value), red-green color (a value) and yellow-blue color (b value). The results showed a difference between the ZnONPs and TiO 2 NPs results as ZnONPs is better than TiO 2 NPs in Elongation and Tensile Strength. Also, the soaking technique results are better than the spraying technique. pH value proved the effectiveness of the ZnONPs more than TiO 2 NPs in controlling Aspergillus due to the enzymes produced by the fungi which affected and damaged the leather samples. So, the author recommended the ZnONPs in controlling the Aspergillus niger and preferred the soaking technique rather than spraying for applying the materials. | ||
| Keywords | ||
| Inhibition; Nanoparticles; Tanned leather - Fungi - Soaking - TiO 2 NPs; ZnONPs | ||
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